CVE-2018-1261: Unsafe Unzip with spring-integration-zip

Severity

Critical

Vendor

Spring by Pivotal

Description

spring-integration-zip , versions prior to 1.0.1, exposes an arbitrary file write vulnerability, that can be achieved using a specially crafted zip archive (affects other archives as well, bzip2, tar, xz, war, cpio, 7z), that holds path traversal filenames. So when the filename gets concatenated to the target extraction directory, the final path ends up outside of the target folder.

This specifically applies to the unzip transformer.

This can only happen if an application using this library accepts and unpacks zip files from untrusted sources.